it says the loss is related to higher than expected cell phone costs and damage from hurricane sandy. they say the pension loss will not effect its operating results. >> 100 students were out sick from one element school. ktvu's paul chambers reports on the steps leaders are taking and while feeling fine is not a reason to return to class. >>> tough week for students and staff. the principal says thursday some students and faculty started getting sick. next day, 100 were absent. >> it looks like norvirus. >> reporter: it spreads through close contact with an effected person. although some think it is the stomach flu it is not related. >> it does effect your stomach. >> with the possible, yet unconfirmed outbreak, they spent the weekend scrubbing classrooms and talking with officials. parents say the school has been helpful when dealing with the outbreak, notifying them every step of the way. >> extremely pro active. they are sending out notices. talking to the kids. >> reporter: just because your child is feeling better doesn't mean they should return right away. >> keep them home for